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1331771-42-6

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1331771-42-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1331771-42-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,1,7,7 and 1 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1331771-42:
(9*1)+(8*3)+(7*3)+(6*1)+(5*7)+(4*7)+(3*1)+(2*4)+(1*2)=136
136 % 10 = 6
So 1331771-42-6 is a valid CAS Registry Number.

1331771-42-6Downstream Products

1331771-42-6Relevant articles and documents

Concise synthesis and structure-activity relationship of furospinosulin-1, a hypoxia-selective growth inhibitor from marine sponge

Kotoku, Naoyuki,Fujioka, Shinichi,Nakata, Chiaki,Yamada, Masaki,Sumii, Yuji,Kawachi, Takashi,Arai, Masayoshi,Kobayashi, Motomasa

, p. 6673 - 6678 (2011/09/30)

Structure-activity relationship of furospinosulin-1 (1), a hypoxia-selective growth inhibitor isolated from marine sponge, was investigated. Concise synthetic method of 1 was developed, and some structurally modified analogues were prepared. Biological evaluation of them revealed that the whole chemical structure was important for the hypoxia-selective growth inhibitory activity of 1. Among prepared, the desmethyl analogue 30 showed excellent hypoxia-selective inhibitory activity similar to that of 1 and also exhibited in vivo anti-tumor activity with oral administration.

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